Executive brief
OpenProject is a project management platform used by teams to track tasks and collaborate. A security flaw in the meeting agenda system allows users to view details of private tasks (work packages) that they are not authorized to see. This could lead to the exposure of sensitive project information or internal task descriptions to unauthorized personnel.
Technical details
An information disclosure vulnerability exists in OpenProject's API endpoint `GET /api/v3/meetings/:meeting_id/agenda_items/:agenda_item_id`. The root cause is an authorization bypass (CWE-639) where the system fails to properly validate permissions for linked work packages. An authenticated attacker with low privileges can query specific agenda items to retrieve data from work packages belonging to private or inaccessible projects. This results in the exposure of sensitive information (CWE-200) to unauthorized actors. The issue is resolved in version 17.4.0.
Affected products
- opf OpenProject < 17.4.0
Timeline
- 2026-06-08: advisory: GitHub Security Advisory published by vendor
- 2026-06-26: disclosed: NVD publication date